[astro][thermal] Updates for 1.022V CPU voltage.

Update sustainable power to slightly exceed the model power of a
fully-loaded CPU, and allow the integral error to drive available
power to zero.

Bug: b/186691020
Change-Id: I9c912ab7a919bb5f7e295d8ca7863ef8ead79ae5
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/524383
Reviewed-by: Patrick Shickel <pshickel@google.com>
Commit-Queue: Onath Claridge <claridge@google.com>
diff --git a/src/power/power-manager/node_config/astro_node_config.json b/src/power/power-manager/node_config/astro_node_config.json
index 3a17dbd..bcff51f 100644
--- a/src/power/power-manager/node_config/astro_node_config.json
+++ b/src/power/power-manager/node_config/astro_node_config.json
@@ -93,9 +93,9 @@
         "sample_interval": 1.0,
         "filter_time_constant": 5.0,
         "target_temperature": 80.0,
-        "e_integral_min": -11.0,
+        "e_integral_min": -12.0,
         "e_integral_max": 0.0,
-        "sustainable_power": 0.876,
+        "sustainable_power": 0.952,
         "proportional_gain": 0.0,
         "integral_gain": 0.08
       },